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Benefit Plans - Valuation Assumptions, Stock Option Activity and RSU Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Jun. 30, 2016
Stock options          
Vesting period          
Expiration period     10 years    
Valuation assumptions:          
Expected dividend yield (as a percent)       0.00%  
Expected volatility (as a percent)       34.00%  
Expected term (years)       6 years 3 months  
Risk-free interest rate (as a percent)       1.83%  
Options Outstanding, Number of Shares          
Balance at the beginning of the period     3,464    
Options granted 0 0 0    
Options forfeited     (16)    
Options exercised     (321)    
Balance at the end of the period 3,127   3,127   3,464
Options Outstanding, Weighted average exercise price          
Balance at the beginning of the period (in dollars per share)     $ 11.75    
Options forfeited (in dollars per share)     17.32    
Options exercised (in dollars per share)     13.94    
Balance at the end of the period (in dollars per share) $ 11.50   $ 11.50   $ 11.75
Options Additional Disclosures          
Weighted average remaining contractual term     5 years 10 months 24 days   6 years 8 months 12 days
Aggregate intrinsic value, at the beginning of the period     $ 108,944    
Weighted average remaining contractual term of options exercisable at the end of the period (years)     5 years 8 months 16 days    
Aggregate intrinsic value, at the end of the period $ 84,835   $ 84,835   $ 108,944
Options exercisable at the end of the period (in shares) 2,766   2,766    
Options exercisable at the end of the period, weighted average exercise price (in dollars per share) $ 9.96   $ 9.96    
Options exercisable intrinsic value $ 79,302   $ 79,302    
Total intrinsic value of options exercised $ 2,813 $ 908 $ 8,352 $ 8,496  
Options vested and expected to vest          
Number of shares 3,111   3,111    
Weighted average exercise price $ 11.41   $ 11.41    
Weighted average remaining contractual term     5 years 10 months 21 days    
Aggregate intrinsic value $ 84,673   $ 84,673    
Weighted average grant date fair value          
Weighted average grant date fair value of options granted (in dollars per share)       $ 12.92  
Unrecognized Compensation Costs Not yet Recognized          
Total unrecognized compensation cost, net of estimated forfeitures, related to unvested stock options 1,004   $ 1,004    
Weighted average period to recognize unrecognized compensation cost     1 year 5 months 12 days    
Stock options | Minimum          
Vesting period          
Vesting period     3 years    
Stock options | Maximum          
Vesting period          
Vesting period     4 years    
Restricted stock units          
Unrecognized Compensation Costs Not yet Recognized          
Total unrecognized compensation cost, net of estimated forfeitures $ 27,942   $ 27,942    
Weighted average period to recognize unrecognized compensation cost     1 year 11 months 1 day    
RSUs Outstanding Rollforward, Units          
RSU Balance at the beginning of the period (in shares)     1,003    
RSUs granted (in shares)     750    
RSUs vested (in shares)     (233)    
RSUs forfeited (in shares)     (41)    
RSU Balance at the end of the period (in shares) 1,479   1,479   1,003
RSUs expected to vest at the end of the period (in shares) 1,313   1,313    
RSUs Outstanding, Weighted average grant date fair value          
RSU Balance at the beginning of the period (in dollars per share)     $ 32.74    
RSUs granted (in dollars per share)     45.38    
RSUs vested (in dollars per share)     32.05    
RSUs cancelled/forfeited (in dollars per share)     39.06    
RSU Balance at the end of the period (in dollars per share) $ 39.06   39.06   $ 32.74
RSUs expected to vest at the end of the period (in dollars per share) $ 38.88   $ 38.88    
Restricted stock units | Minimum          
Vesting period          
Vesting period     3 years    
Restricted stock units | Maximum          
Vesting period          
Vesting period     4 years